I am sorry you picked RDH as a major because the job market is terrible and just getting worse in all of the USA. Plus it can take years of work experience before you can find jobs as a RDH. I suggest if you are going back to college for a BS degree you 1) choose a state college. Don't pick an expensive private college and do NOT go back for a BS in dental hygiene, that is a waste of time and money.
2) pick a science or public health major. I would choose a BS in biology, chemistry, etc. Because if you can't find RDH work you can always work in a lab and make good money IF you have a science background such as biology or chemistry. And then you can later go back for a Masters in public health or something of that nature. Do NOT do a BS in dental hygiene or anything other than math or science. Math and science majors are always in demand. I have a BS in business and it has given me nothing back. I wish I had picked a major in a science field.